Adaptive radiation in miniature: the minute salamanders of the Mexican highlands (Amphibia: Plethodontidae: Thorius)
نویسندگان
چکیده
Departamento de Zoología, Instituto de Biología, Universidad Nacional Autónoma de México, AP 70-153, CP 04510, Ciudad Universitaria, México D.F., México Department of Integrative Biology and Museum of Vertebrate Zoology, University of California, Berkeley, CA 94720-3160, USA Department of Organismic and Evolutionary Biology and Museum of Comparative Zoology, Harvard University, 26 Oxford St., Cambridge, MA 02138, USA Department of Biological Science, University of Tulsa, 800 S Tucker Drive, Tulsa, OK 74104, USA
منابع مشابه
Biology of Tiny Animals: Systematics of the Minute Salamanders (Thorius: Plethodontidae) from Veracruz and Puebla, Mexico, with Descriptions of Five New Species
Minute plethodontid salamanders, genus Thorius, are far more diverse taxonomically than has been recognized previously. Populations of these salamanders from the Mexican states of Veracruz and Puebla are assigned to 10 species, five of which are described as new. Combinations of morphological and allozymic characters are used to sort the species and to make initial assessments of relationships....
متن کاملFive New Species of Minute Salamanders , Genus Thorius ( Caudata : Plethodontidae
Five new species of diminutive salamanders of the endemic Mexican genus Thorius (Plethodontidae) are described from the Sierra de Juarez in northern Oaxaca. The species are diagnosed by adult body size, external proportions, dentition, osteology and coloration. The three species that have been studied using protein electrophoresis are genetically unique; all differ from T. macdougalli, the only...
متن کاملGenetic Variation in a Dwarfed Lineage, the Mexican Salamander Genus Thorius (Amphibia: Plethodontidae): Taxonomic, Ecologic and Evolutionary Implications
Patterns of genetic relationship and taxonomic identity are examined in Thorius, an enigmatic genus of minute neotropical salamanders that represent the smallest tailed tetrapods. Data comprise an electrophoretic analysis of 16 protein loci in 69 population samples from 55 localities throughout the range of the genus in southern Mexico. Eight of the nine described species are genetically distin...
متن کاملA Seventh Species of Minute Salamander (thorius: Plethodontidae) from the Sierra De Juarez, Oaxaca, Mexico
We describe a new terrestrial species of minute lungless salamander of the Mexican genus Thorius (Plethodontidae) from montane pine-oak forests in the Sierra de Juarez of north central Oaxaca, Mexico. The new species is distinguished from congeners by a combination of body size, external morphology, osteology, and dental traits, and it is well differentiated genetically from other named species...
متن کاملMiniaturization and its effects on cranial morphology in plethodontid salamanders, genus Thorius (Amphibia, Plethodontidae): II. The fate of the brain and sense organs and their role in skull morphogenesis and evolution.
Relative size and arrangement of the brain and paired sense organs are examined in three species of Thorius, a genus of minute, terrestrial salamanders that are among the smallest extant tailed tetrapods. Analogous measurements of representative species of three related genera of larger tropical (Pseudoeurycea, Chiropterotriton) and temperate (Plethodon) salamanders are used to identify changes...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2013